http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53321
--- Comment #22 from H.J. Lu <hjl.tools at gmail dot com> 2012-07-06 18:46:09
UTC ---
After inlining, IPA calls tree_profiling which rebuilds edges:
#2 0x0000000000683ccd in rebuild_cgraph_edges ()
at /export/gnu/import/git/gcc/gcc/cgraphbuild.c:433
#3 0x0000000000c02de6 in tree_profiling ()
at /export/gnu/import/git/gcc/gcc/tree-profile.c:564
#4 0x0000000000a1be4f in execute_one_pass (pass=0x1908520)
at /export/gnu/import/git/gcc/gcc/passes.c:2165
#5 0x0000000000a1cb0c in execute_ipa_pass_list (pass=0x1908520)
at /export/gnu/import/git/gcc/gcc/passes.c:2532
#6 0x000000000068b874 in ipa_passes ()
at /export/gnu/import/git/gcc/gcc/cgraphunit.c:1844
basic_block bb;
struct cgraph_node *node = cgraph_get_node (current_function_decl);
gimple_stmt_iterator gsi;
cgraph_node_remove_callees (node);
ipa_remove_all_references (&node->symbol.ref_list);
node->count = ENTRY_BLOCK_PTR->count;
and creates new edges. After that, all things went downhill
#0 internal_error (
gmsgid=0x158c110 "vector %s %s domain error, in %s at %s:%u")
at /export/gnu/import/git/gcc/gcc/diagnostic.c:955
#1 0x000000000124f707 in vec_assert_fail (op=0x12fc800 "index",
struct_name=0x12fc7e0 "VEC(inline_edge_summary_t,base)",
file=0x12fc808 "/export/gnu/import/git/gcc/gcc/ipa-inline.h", line=200,
function=0x12fd380 "inline_edge_summary")
at /export/gnu/import/git/gcc/gcc/vec.c:527
#2 0x000000000067c685 in VEC_inline_edge_summary_t_base_index (
vec_=0x1aea360, ix_=6,
file_=0x12fc808 "/export/gnu/import/git/gcc/gcc/ipa-inline.h", line_=200,
function_=0x12fd380 "inline_edge_summary")
at /export/gnu/import/git/gcc/gcc/ipa-inline.h:145
#3 0x000000000067c6cd in inline_edge_summary (edge=0x7ffff1ab67b8)
at /export/gnu/import/git/gcc/gcc/ipa-inline.h:199
since inline_edge_summary_vec was never updated.
